The CER0609A from CTS Electronic Components is a Band Pass Filter with Frequency 1.63 to 1.66 GHz, Bandwidth 34 MHz, Insertion Loss Less than 2.2 to 2.5 dB, Rejection 31 to 41 dB, Power 1 to 10 W. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for CER0609A can be seen below.